You could also use key substitutions in a direct map, in situations
such as the following:

/usr/man willow,cedar,poplar:/usr/man

You can also simplify the entry further as follows:

/usr/man willow,cedar,poplar:&

Notice that the ampersand substitution uses the whole key string. Therefore,
if the key in a direct map starts with a / (as it should),
the slash is included in the substitution. Consequently, for example, you
could not do the following:

/progs &1,&2,&3:/export/src/progs

The reason is that autofs would interpret the example as the following: